Machine for truing and the like.



H. G. CARLSON.

MACHINE FOR TRUING AND THE LIKE.

APPLICATION FILED JULY 17, 1913.

khlllllll H. G. GARLSON.

MACHINE FOR. TRUING AND THE LIKE.

APPLICATION FILED JULY 17 1913. I

Patented Aug. 4, 1914.

2 SHEETS-SHEET 2.

iwlzcilred';

UNITED STATES PATENT OFFICE.

HJ'ALMAR G. CARLSON, OF WORCESTER, MASSACHUSETTS, ASSTGNOR T0 ROCKWOOD SPRINKLER COMPANY OF MASSACHUSETTS, 0F WORCESTER, MASSACHUSETTS, A

CORPORATION OF MASSACHUSETTS.

MACHINE FOR TRUING AND THE LIKE.

Specification of Letters Patent.

Patented Aug. 4, 1914.

Application filed J uly 17, 1918. Serial No. 779,494.

To all whom. it may concern Be it known that I, HJALMAR G. OAnLsoN,

a citizen of the United States, residing at be fed rapidly by hand and placed properly in position with the expenditure of a minimum amount of time and trouble, and which can be operated by the same operator that feeds the articles for the purpose of truing off both ends and bringing the article to a definite length; also to provide improvements in details of construction and combinations of parts, as will appear hereinafter.

Reference is to be had to the accompanying drawings in which Figure 1 is a front elevation of a machine constructed in accordance with this invention, certain parts being shown in section; Fig. 2 is an end view of the same; Fig. 3 is a sectional view on the line 33 of Fig. 1; Fig. 1 is a similar view showing the parts in a different position; Fig. 5 is a. plan of the machine; Fig. 6 is a fragmentary plan showing the parts in position for receiving the blank to be operated upon; and Fig. 7 is a central sectional view on a large scale showing the operation of truing the ends of the blank.

The machine is shown as comprising a base 10 which is mounted on a frame, in any desired position and provided with machined ways 11. Fixed on these ways but adjustable along them is av block 12. This also is provided with ways 13 transverse to the ways 11. On the transverse ways is mounted a slide 14. For the pin-pose of operating this slide, a lever 15 is rovided, connected with the slide on one sic e by a pivot 16 and having an operating handle (not shown) on the other side. The pivot 16 is mounted on the block 12. On the slide is a stop 17 for engaging the end of the block 12 to limitthe inward motion. On the slide is a work holder 18 having fixed thereon, by a screw 19, a jaw 20 or seat for receiving the blank A which is to be operated upon. The work holder, 18 being fixed to the slide 14, operates positively with it.

Extending upwardly from the slide 14 are a pair of cars 22 supporting a shaft or stud 23 on which is pivoted an upper work holder 24. This is provided with a jaw 25 similar to the one 20 and held in position by screws in the same way.

The jaw 20 is formed with a cavity at the top fitting the blank to be held. The jaw 25 is formed with a cavity but this does not fit the blank. A pair of pins 26 are provided for engaging the blank and holding it firmly 1n position when the upper jaw is down in operative position as shown in Fig. 3. The

upper work holder is provided with an upwardly extending projection 27 at one end and with a depressed socket 27 adjacent thereto. Above the bottom of this socket is a level surface 28. Supported above the jaw 24 is a shaft 30 having a roll 31 thereon. This is in s ationary position and so located as to operate the jaw 24 as the slide 14: moves. When the slide 14 moves forward to receive the work, the projection 27 engages the roll 31 and causes the upper jaw to move up as shown in Fig. at. \Vhen the slide is moved back it causes the projection 27 to move away from the roll and the surface 28 to engage it. In this way the jaw is clamped down to hold the work securely during the cutting operation.

For the purpose of providing adjustments for taking up work and arranging the device for holding work of different sizes, the shaft 30 is provided at its ends with eccentric studs 32 which are carried in hubs 33 supported in a way that will appear hereinafter.

Adjustably fixed on the ways 11 are a pair of stands 35 located on opposite sides of the block 12. It will be understood that these two stands and the block 12 can be adjusted back and forth for the purpose of permitting the machine to operate on work of different lengths. They are fastened in adjusted positions by means of screws, bolts, or in any other desired way. Each of the stands is provided with a rear-wardly extending portion of which one of the hubs 33 is a art. p Each of the stands 35 is provided with a shaft 36 having a keyway 37. On each of these shafts is mounted a pulley 38 having a key 39 extending into the keyway loosely. The pulley is designed to be operated constantly by a belt driven in any desired way. Each of these shafts is provided at its inner end with a tool holder 40 carrying a cutting tool 41. F or the purpose of moving these links 47 with yokes 48, each of which is connected with one of the shafts 36' so as to move the shaft with it when it rcciprocates.

. Each of these shafts is provided with collars 49 on opposite sides of the yoke. Each yoke is also provided with a stopscrew 50 for engaging the end of the stand 35 and limiting the motion of the cutting tool. Each yoke is'fixed on a guide rod 51 onsaid stand provided with a spring 52 for normally holding the tool away from the work and opposing the operation of the treadle.

For the purpose of gaging the work the machine is provided with a gage 53 adjustably" mounted thereon and extending into position to engage the end of the work when placed in the lower jaw as indicated in Fig. 6.

The operation of the device has been disclosed in the description of the mechanism. The operator removes his foot from the treadle 42 and the springs 52 then bring the cutters outwardly away from the work. He then turnsv down the handle of the arm 15, thus pulling out the slide. This automatically causes-the projection 27 to engage the roll 31 and lift the jaw 24:, as shown in Figs. 4 and 6. The operator then removes the blank A, which is in the machine and introduces another, being careful that its end comes up against the end of the gage 53. Now he raises the handle which forces the slide back and causes the upper jaw to be clamped down on the work as shown in Fig. 3. He then steps on the treadle which causes the constantly rotating cutters to come into operative position, as shown in Fig. 7 and true off the ends of the blank. By the previous adjustment of the screws 50, the truing off of the blank to a definite length is assured. 0

Although I have illustrated and described only a single embodiment of my invention and shown it as applied to the truing ofi of only a single article of manufacture, I am aware of the fact that many modifications can be made in the mechanism and that it can be applied either with or without modification to the truing 0d of the end or ends of many kinds of articles without departing from the scope of the invention as expressed in the claims, therefore I do not wish to be limited in this respect, but

What I do claim is 1. Tu a machine of the character described, the combination of a reciprocable jaw for holding the work, a second jaw pivotally connected therewith, and means located in fixed position for swinging the pivoted jaw about its pivot when .the first jaw is moved to an extreme position in one direction and for locking it against the first jaw when moved to an extreme position in the opposite direction.

2. In a machine of the character described,

the combination of a slide, a work-holding aw fixed thereon open at the top, an .upper aw open at the bottom, movable longitudinally with'said slide and adapted to move.

whereby when the slide is moved back, and

forth the roll will engage said upper jaw to open and close it positively.

4. In a machine of the character described, the combination of a slide, a jaw fixed thereon, an upper jaw pivoted on said slide above the first jaw' and having an upward projection and a flat surface, and a roll in position to engage said projection when the slide moves in one direction and tip the upper jaw away from the lower jaw, and to engage said fiat surface when the slide moves in the opposite direction and force said upper jaw down over the lower jaw and clamp it in i that position.

- 5. Th a machine of the character described, the combination of a slide, having a jaw fixed thereon, a second jaw pivoted upon the first jaw and adapted to cooperate therewith, said second jaw having a projection extending upwardly at one end over the pivot, a substantially fiat surface along the top of said second jaw, and a depression between said projection andflat surface, and a roll mounted above the upper jaw in position to engage said projection and surface alternately as the slide reciprocates.

6. In a machine of the character described, the combinatioh (if a slide, a work holding jaw fixed thereon, a second work holding jaw movable with said slide and adapted to move up and down thereon, and means whereb whenthe slide moves in one direc- 'tion, t e upper jaw will be opened and whereby when it moves in the other direction the upper jaw will first be closed and thenclamped in closed osition, said lower jaw having a seat shaped to fit the article to be held and the upper jaw having a seat provided with points extending inwardly to grip the article when the jaw is closed,

7 In a machine of the character described, the combination of a slide, a work holding jaw fixed thereon, 'a second work holding JaWIIIOVfiblG with said slide and adapted to move u and down thereon, means whereby when t e slide moves in one direction, the

upper jaw will be 0 ened and whereby when it moves in the ot ier direction the up er jaw will first be closed and then clampe in closed position, and means for truing the end of an article held by said jaws when the slide moves to the position in which the jaws are closed.

8. In a machine of the character described,

the combination of a slide having a pair of jaws thereon, one of said jaws being movable transversely toward and from the slide, and means for automatically opening the jaws transversely after the slide has moved forward part Wu and for closing them when it moves bac ward.

9. In a machine of the character described, the combination of a base having ways thereon, a block adjustable on said ways and on the first named ways on op osite sides of the block, and a air of sha ts carried b said stands, said s iafts being provided wit cutting tools.

In testimony whereof I have hereunto set my hand, in the presence of two subscribing witnesses.

HJALMAR G. CARLSONQ Witnesses ALBERT E, FAY, C. Fomms'r Wesson. 

